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91159 (1998 QA73)
Classification: Main-belt Asteroid          SPK-ID: 2091159
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2887933215262923 5.7918e-08  
a 3.192318486492043 2.124e-08 au
q 2.27039822740822 1.8909e-07 au
i 17.51798374830755 5.6927e-06 deg
node 184.3217069151432 1.4694e-05 deg
peri 202.8103941177451 1.6393e-05 deg
M 277.1495364996495 9.7892e-06 deg
tp 2459479.957578687678
(2021-Sep-22.45757869)
6.0158e-05 TDB
period 2083.328457502641
5.70
2.0792e-05
5.693e-08
d
yr
n .1728004044218475 1.7246e-09 deg/d
Q 4.114238745575866 2.7375e-08 au
  Orbit Determination Parameters
   # obs. used (total)      617  
   data-arc span      7594 days (20.79 yr)  
   first obs. used      1998-08-19  
   last obs. used      2019-06-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50478  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:24:26  

Additional Information
 Earth MOID = 1.28287 au 
 Jupiter MOID = 1.38774 au 
 T_jup = 3.060 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.4   n/a MPO474790  
diameter diameter 8.851 km 0.442 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.039   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

91159 (1998 QA73)          Discovered 1998-Aug-24 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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